found this site today. Thought users here would find it useful.
https://coolshap.es/
i have tried to import two of the shapes (as svg)...
this is the result with the forth "star" on the first row:
CS_star_4.png
inkscape reads it correctly.
yes, that was my experience as well – not really usable with scribus.
i didn't really understand how the shapes have been built...
utnik